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Fire obsidian, so named for its vivid spectrum of colors, is rare and so far has been found in only one site within the Glass Buttes region of central Oregon. A rhyolitic dome field, Glass Buttes has ...
He wasn’t technically wrong though. Glass Buttes weren’t named Rock or Stone or any synonym thereof — they were named for obsidian, the silica-rich volcanic glass found in abundance there. weren ...
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